OSBB

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​In the context of the South Gas Regional Initiative, the Transmission System Operators Enagas (Spain), REN (Portugal) and TIGF (France) have been asked to establish a joint and coordinated oversubscription and buy-back (OSBB) scheme.

The present document, finalised in April 2016, describes in detail the coordinated implementation of the OSBB scheme at the cross-border interconnection points between Portugal and Spain (VIP Ibérico), and between France and Spain (VIP Pirineos).